Air and water attachment for dental engines.



R. E CUNNINGHAM & A. 0. SMITH. AIR AND WATER ATTACHMENT FOR DENTAL ENGINES.

APPLICATION FILED DBO, 2'7, 1910.

M w M% M9 1 m? flay R. E. CUNNINGHAM & A. 0. SMITH. AIR AND WATER ATTACHMENT FOR I)BNTAL ENGI NBS.

APPLICATION FILED DEC. 27, 1910. 1,000,785. Patented Aug. 15,1911.

2 SHEETS-SHEET 2.

vwamtow Grtouwq ROBERT E. CUNNINGHAM ANDAMOS J SMI TH, ornnnnnromenonem. b I

T0 1111 'whonc concern: 4 Be it known-that we, ROBERT E. CUN- NlNGHAM' and AMos G. SMITH,,CltlZeI1S of "have invented new and useful Improve the United States, 'residingat Elberton, in

the county 'ofyElbert and ate of Georgia,

I ments in Air and Water Attachments for directed on the tooth on which the dentali engine is operating.

Dental-Engines, of which the followingis a specification. v

This invention relates to' an attachment for. dental engines whereby hot or cold air or water, or a combination of both may be The invention has for one of its objects to provide a device of this character which.

- is reliable and'efficient in use, readily ma- I bination can be directed on thetooth for' hereinafter and nipulated, and capable'of being employment 0 1 section showing the applied to any ordinary dental-engine. q

Another object of the invention is the provision of a novel attachment piece valve "for opening or closing the flow of air or water, as required. the air'and water being supplied by separate tubes or conduits to the valve and in each conduit is a cut-oll valve whereby water or air singly or in comcleaning, cooling or drying the same. Another ob'ect of the in ention is the inovel means or heating the air or water, the nozzle of the device. With these objects in view and others,'as will appear as the description proceeds, the invention comprises the ,various novel features of construction and arrangement of parts which will be more fully described set forth with particularity in the claims appended hereto. 7

In 'the accompanying drawings,

Figure 1 is a side view of a dental engine showing the air and'water. supplying attachment applied thereto. Fig. 2 is a transverse air and water heater. Fig. 3 is a side view of the hand piece of the engine with the nozzle and controlling valve applied thereto. Fig. 4 is a plan view of Fig. 3. Fig. 5 through the valve blockand showing the for the hand of the engine including a controlling on the lower end or both, as it is supplied tov 7, the lamp can be thrown which illustrate one'embodiment of the invention,

is a detail sectional view AIR AND WATER. ATTACHM NT on DENTAL ENGINES.

specification ofil ietters iatent.- Patent ed Aug," .15, .1911. Application filed Decemb er 27.1910. Serial 'No.;59 9,34 6. j

manner of'detachably connecting the air and water pipes thereto.

ployed ,tofi designate corresponding parts ;;throughout1the views.

Referring .to I the. drawings, 'A designates the supporting arm of the engine, which is Similar reference characters are em hingedly mounted on a suitable support such as a wall bracket B, and: on the outer end of the arm is the usual flexible shaft C to which a removable hand piece Dis at tached. The engine is of ordinary construction and the water and" air-feeding'ap- .paratus is applied thereto without requiring any change in design. Extending along the arm A. and suitably supported thereby are an and water supply plpes 1 and 2, the first being connected with aj suitable source of compressed air and the second to ,a city service "water system ortoa tank located at a point above the en- ,gineso that'water will fiow by gravity. At a su table point in each conduit'or pipe l and 2 is a bulb or. heating chamber '3, and

disposed in cooperative relation therewithis a heater of any suitable character such as an alcohol lampfl, although an electric with nipples or hollow-plugs 8 so as to be inserted in a, block or valve body9, the said body having tapered openings 10 into which the nipples snugly fit so as to make a fluidtight joint. The nipples are provided with valves 11 so that water and airv can pass .throughthe respective pipes or be interrupted. s

The. hand pieceD has extending along the same a nozzle tube 12 which terminates heater maybe employed. The lamp is sup- The lower ends of the pipes are equipped 1 I tively. The rotary valve 1815 provided 7 adjacent the bur '13, emery wheel, polishing cup or any other instrument being used.

Thisrnozzletube 12has a ring 14 at one end *so-as to slip longitudinally on and'ofli -thetip ofthehand piece, and at the inner end of the' tube is; a l J shapedi clip -.15 that snaps overthe handpiece adjacent the butt thereof. The nozzle tube" is jointed to' the valve casing 9 and this casing has separate passages 16 and 17 that aread'aptedto be brought into communication with the'nozzle tube through a rotary valve 18 in the valve casing, said. valve having separate passages 19vand*20"'that unite in a single port '21. This port 21 is adapted'to be'thrownint0 and; out ofcommunication; with the pas sage'leading totlie nozzle tube and when f it is incommunication'" withfsuh passage,

the passages 19 and 20 will be in communication with the passages '16 and'f17, respec witha'n arm 22that is connectedby a link 23 with a" slide 24:"that moves "-lo'ngitudi nally of thenozzle tube; This 'slidel has a thumb piece 25 so shaped thatthe' thumb of V thehand gripping the-handpiece can be j engaged therewith-and slip longitudinally back and forth for opening and closing the controllingivalve "18f The slide includes lugs 26 that are bent around the nozzle tube to' slide thereon. When the air andwater valves are open, the controlling valve can i be manipulated by sliding the'thumb piece back and forth so as deliver air and. waternpon' the tooth being operated on, or

interrupt it when desired. When the. valve of" one supply pipe is open, only air or water will be delivered to the teeth when the controlling valve is opened. This ready.-

supply of either air or water in colder I heated condition,ror a combination of air and water, is extremely useful in dental operations, as will be appreciated" by those practicingthe profession.

c connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily "ap-' parent to those skilled in the art to which .50

' From the foregoing description, taken in theinventionappertains, and while we have described the principle" of operation of'thefinvention, together with the device which we now consider to be the. best-embodiment thereof,'wedesire to haveit understood that the device shown is merely'illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto,

Having thus described the invention, what we clalm as'new, 1S

. 1. The combination of a dental engine including'a supporting arm, a flexible shaft suspended thereby, and a- 'handfpiece, with a supply pipe extending along the arm and flexible shaft and includinga heating lcham posed in coeperativerelationwiththe cham J ber,a heater supported on the arm and dis-.7

her, and a valve at the hand piece for con- V 7 trolling the discharge of fluid on the teeth being operated on, w J I, J 2. The combination ofa dental engine including a 'supporting iarmfa flexible shaft, if and a hand piece,'air and'water pipes extending along the arm andfshaft, a nozzle, 15:

at the hand piece to which the pipes'are con disposed adjacent the heating chambergifor heating one or therother oriboth; i e 3. The combination of a dental engine including'a supportingfarm, a flexible shaft, anda hand piece, air? and water-pipes ex tending along thefaifm and shaft, {a nozzle at the hand piece to which the pipes'are connected, each pipe including a heating chamber, a bracket 'movably'mounted on the arm,

and a heater on the bracket movable to position for heating either chamber or both.

4. A dental engine including a hand piece, air and water pipes, a valve attached to the hand piece, removable connections between the pipes and valve tolpermitthe latter-to bedetached therefrom withthe ha'nd -piece,-'

independent valves in the pipes, and means for operating the, firstmentioned valve.

' '5. In a dental engine, the combination of a flexible shaft, aremovabl'e hand piece con:

'nected therewith,,a nozzle tube disposed on the hand piece and having its orifice ar' ranged adjacent the instrument in the handpiece, a ring on the nozzle tube for slipplng on'and'oflthe hand piece, aclip on.

the nozzle tube for embracing thehand' the flexible shaft, and a device removably piece, air, and water pipes extending along connecting the nozzle tube with. the pipes I o and including a valve'for opening and closing the supply of air and water to the nozwith the valves casing, and meansfor mounting-the valve casing'and nozzle tube on the hand piece. 1 I

ill

of air andwater a nozzle tube connected 7 v 7. In a dental engine, the combination of tachably connected therewith, air and water supply conduits extending along the shaft,

a flexible driving shaft, a. hand piece denipples on the 'endsof the conduits and inp cluding cut-off valves, a valve easing into which the nipples are removably inserted, a valve the casing controlling the supply of air and water, a nozzle tube connected 7 51; *nected, each pipe including a heating chamher, and a'heater supported on the armjand. Y

with the valve casing, means for mounting In testimony whereof we aflix our signathe valve casmg and nozzle tube on the hand tures 1n presence of two witnesses.

piece, a slide on the nozzle tube, and a con- ROBERT E. CUNNINGHAM.

nection between the slide and controlling .AMOS C. SMITH. valve whereby the thumb of the hand hold- Witnesses:

ing the hand piece can be used for opening R. J. WARD,

and closing the controlling valve. .'GE0RGE HASLETI. 

